公开(公告)号：US20240091747A1

公开(公告)日：2024-03-21

申请号：US17933523

申请日：2022-09-20

Applicant: Tsinghua University

Inventor： Binhang YAN ,  Zhihe ZHANG

IPC: B01J23/755 ,  B01J23/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  C07C1/12 ,  G01N30/68

CPC classification number: B01J23/755 ,  B01J23/10 ,  B01J37/009 ,  B01J37/0236 ,  B01J37/035 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  C07C1/12 ,  G01N30/68 ,  C07C2523/10 ,  C07C2523/755 ,  G01N2030/025

Abstract: Disclosed are a Ni-based catalyst for an unsteady-state trace CO, methanation reaction, and a preparation method thereof. The Ni-based catalyst according to the disclosure is composed of an active metal Ni and an oxide support, wherein the oxide support is composed of a rare earth oxide (REO) and an inert oxide; and the rare earth oxide and the inert oxide exhibit an excellent synergistic effect to ensure both high reactivity and weak adsorption and desorption interference. The Ni-based catalyst has a mass percentage of the active metal Ni of 40 wt. % to 90 wt. %, and a mass percentage of the REO of 0.5 wt. % to 20 wt. %, a balance being the inert oxide. The preparation method of the disclosure is a co-precipitation method, including a direct mixing for co-precipitation, a constant-speed dropwise addition for co-precipitation, and a microchannel mixing for co-precipitation.